作业求助

linchan

Eight months ago, Louise agreed to pay Thelma $750 and $950, six and twelve
! R0 ~8 K9 H# K9 m( Q- d+ imonths respectively from the date of the agreement. With each payment, Louise
agreed to pay interest at the rate of 9.5% pa from the date of the agreement. Louise
failed to make the first payment and now wishes to settle her obligations with a
single payment four months from now. What payment should Thelma be willing to
accept if money can earn 7.75%? （最好有过程）

littledognancy

Suppose Intr is annually compounded                                       
                Month 0        Mon. 8                  Mon. 12
* d. m9 [2 R: G# p& q7 x. VCash Principal        X        -750                  -950       
Cash Intr (Should Pay)                -X*9.5%*8/12          -(X-750)*9.5%*4/12               
PV at mon 0        X        -[750+X*9.5%*8/12]          -[950+(X-750)*9.5%*4/12]
                                                 /(1+7.75%*8/12)           /(1+7.75%*12/12)
+ s/ k# P+ ?; }; T( T
, R" b3 K5 ~: }7 c/ s- Nthese 3 should add up to 0, i.e. NPV at month 0 is 0.
                                       
Conclusion        X        =        1729.8               
                                       
6 V1 _9 Y" I% }( I7 P4 U8 X9 H" ESo, Initial borrowing was        1730        *(1+7.5%)        1859.5        approx.         $1,860
% b" [; G+ H) q9 N, s) U7 a) d

littledognancy

Finance 学得不好所以不知道做得对不对。。。看着办吧~ 也许有用。

linchan

对了，答案是$1856.32